From a4bf68b613a443538a54e77ff2863c88c1c8a86a Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan.boberg@epicgames.com>
Date: Thu, 2 May 2024 17:50:27 +0200
Subject: added logic to change default HTTP server implementation when running
 on Wine (#71)

* added logic to change default HTTP server implementation when running on Wine
* added log message to inform user about potential problems when running under Wine
---
 src/zencore/include/zencore/windows.h |  2 ++
 src/zencore/windows.cpp               | 13 +++++++++++++
 src/zenserver/config.cpp              | 11 ++++++++---
 src/zenserver/zenserver.cpp           |  8 ++++++++
 src/zenutil/zenserverprocess.cpp      | 11 ++++++++---
 5 files changed, 39 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/zencore/include/zencore/windows.h b/src/zencore/include/zencore/windows.h
index 14026fef1..b2b220f8f 100644
--- a/src/zencore/include/zencore/windows.h
+++ b/src/zencore/include/zencore/windows.h
@@ -412,5 +412,7 @@ private:
 	DWORD		   m_dwViewDesiredAccess;
 };
 
+bool IsRunningOnWine();
+
 }  // namespace zen::windows
 #endif
diff --git a/src/zencore/windows.cpp b/src/zencore/windows.cpp
index 76d8ab445..d02fcd35e 100644
--- a/src/zencore/windows.cpp
+++ b/src/zencore/windows.cpp
@@ -9,6 +9,19 @@
 
 namespace zen::windows {
 
+bool
+IsRunningOnWine()
+{
+	HMODULE NtDll = GetModuleHandleA("ntdll.dll");
+
+	if (NtDll)
+	{
+		return !!GetProcAddress(NtDll, "wine_get_version");
+	}
+
+	return false;
+}
+
 FileMapping::FileMapping(_In_ FileMapping& orig)
 {
 	m_pData	   = NULL;
diff --git a/src/zenserver/config.cpp b/src/zenserver/config.cpp
index e33b6caf3..ce1b21926 100644
--- a/src/zenserver/config.cpp
+++ b/src/zenserver/config.cpp
@@ -35,6 +35,8 @@ ZEN_THIRD_PARTY_INCLUDES_END
 
 #if ZEN_PLATFORM_WINDOWS
 
+#	include <zencore/windows.h>
+
 // Used for getting My Documents for default data directory
 #	include <ShlObj.h>
 #	pragma comment(lib, "shell32.lib")
@@ -550,10 +552,13 @@ ParseConfigFile(const std::filesystem::path& Path,
 void
 ParseCliOptions(int argc, char* argv[], ZenServerOptions& ServerOptions)
 {
-#if ZEN_WITH_HTTPSYS
-	const char* DefaultHttp = "httpsys";
-#else
 	const char* DefaultHttp = "asio";
+
+#if ZEN_WITH_HTTPSYS
+	if (!zen::windows::IsRunningOnWine())
+	{
+		DefaultHttp = "httpsys";
+	}
 #endif
 
 	// Note to those adding future options; std::filesystem::path-type options
diff --git a/src/zenserver/zenserver.cpp b/src/zenserver/zenserver.cpp
index 89f376709..0909c26e9 100644
--- a/src/zenserver/zenserver.cpp
+++ b/src/zenserver/zenserver.cpp
@@ -608,6 +608,14 @@ ZenServer::Run()
 	}
 
 	ZEN_INFO(ZEN_APP_NAME " now running (pid: {})", GetCurrentProcessId());
+
+#if ZEN_PLATFORM_WINDOWS
+	if (zen::windows::IsRunningOnWine())
+	{
+		ZEN_INFO("detected Wine session - " ZEN_APP_NAME " is not formally tested on Wine and may therefore not work or perform well");
+	}
+#endif
+
 #if ZEN_USE_SENTRY
 	ZEN_INFO("sentry crash handler {}", m_UseSentry ? "ENABLED" : "DISABLED");
 	if (m_UseSentry)
diff --git a/src/zenutil/zenserverprocess.cpp b/src/zenutil/zenserverprocess.cpp
index 26c72fc9b..a44ea4954 100644
--- a/src/zenutil/zenserverprocess.cpp
+++ b/src/zenutil/zenserverprocess.cpp
@@ -482,10 +482,15 @@ ZenServerEnvironment::InitializeForTest(std::filesystem::path ProgramBaseDir,
 	if (ServerClass.empty())
 	{
 #if ZEN_WITH_HTTPSYS
-		m_ServerClass = "httpsys"sv;
-#else
-		m_ServerClass = "asio"sv;
+		if (!zen::windows::IsRunningOnWine())
+		{
+			m_ServerClass = "httpsys"sv;
+
+			return;
+		}
 #endif
+
+		m_ServerClass = "asio"sv;
 	}
 	else
 	{
-- 
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